HSS Step Drill Bit Ø4-12 mm, Step 1 mm, Shank Ø6 mm STALCO PERFECT S-72520

The HSS step drill bit is a very useful product. It is used for professional work in industry, locksmithing, and construction. It allows drilling holes of selected diameters, enlarging existing holes, creating pilot points for further processing, and even edge milling. It is equipped with a cylindrical shank that can be mounted in drills, screwdrivers, and some milling machines. The HSS STALCO PERFECT step drill bit is made of high-speed steel (HSS). The ground spiral groove reduces vibrations, improving precision. It also facilitates quick chip removal. Thanks to axial grinding, the drill leaves very smooth edges. STALCO offers step drill bits in three variants, differing in drill diameter range, step pitch, and shank diameter.

Features & Advantages

• Ground, sharp edges speed up work and reduce the time needed to complete it
• Quick chip removal accelerates work and saves time
• Long product life reduces costs

Characteristics

• Step drills for materials up to 4 mm thick for burr-free drilling
• Shank with ground spiral groove ensures optimal chip removal and limits vibrations
• High-speed steel (HSS) – high alloy steel mainly used for cutting tools
• Laser-engraved dimensions
• Maximum cutting smoothness thanks to axial and radial grinding
• Cross-ground tip enables easy start and drilling without a center punch or pre-drilling

Material

• HSS Steel

Application

• Drilling holes in steel, plastics, wood

Material Type

• Sheets of ferrous and non-ferrous metals
• Profiles and pipes
• Copper, brass
• Aluminum – use uncoated drill bits
• Stainless steel – use HSS-E / HSS-Cobalt step drill bits only
• Plastics
• Composite wall and roof panels

Industry Use

• Electrical / electrotechnical: drilling in panels and distribution cabinets for connectors
• Hydraulic, heating, air conditioning, ventilation: inspection holes, etc.
• Machining / production: various diameters and hole enlargement
• Automotive industry: holes for cable installation (phones, antennas, wiring)
• Maintenance and renovation: various uses, e.g., enlarging holes

Step drill bits, as the name suggests, have multiple steps that cut the desired diameter, making them different from other types of drills. They allow economical production of holes with different diameters using a single tool.

For HSS step drills, use grinding oil, drilling/cutting oil, or compressed air as coolant or lubricant. For uncoated HSS bits, coolant use is required.

Technical Data

• HSS step drill bit is a strong, high-performance tool for burr-free drilling and deburring of sheets, pipes, and profiles
• Diameter: 4 – 12 mm
• Step pitch: 1 mm
• Shank: 6 mm